Hi,

Most issues with insufficient pressure in the cuffs are due to a cuff leak or connection to the cuff leaking.

To test whether the cuffs are causing the issue, please swap the faulty cuff with one that is working.

If the fault is displayed on the new cuff position the cuff is damaged and will need to be replaced. 

You can order new cuffs from our website - https://zonemedical.com.au/blood-pressure-monitoring/bpm-sphygs-accessories/

If this does not resolve the issue please reply to this email.

The manufacturer recommends each cuff is replaced annually.

Regards

Zone Technica Support